| 1 |
<?php |
| 2 |
|
| 3 |
if (!defined('ABSPATH')) { |
| 4 |
exit; |
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} |
| 6 |
|
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/** |
| 8 |
* Owns WordPress cron primitive access for plugin scheduling code. |
| 9 |
* |
| 10 |
* Domain services decide whether work is needed; this adapter owns hook names, |
| 11 |
* schedule checks, wall-clock offsets, and clearing/unscheduling around the |
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* WordPress cron API. |
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* |
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* It performs the writes but does not judge them: what a refused write means, |
| 15 |
* and what gets said about it, belongs to |
| 16 |
* {@see ABJ_404_Solution_CronWriteOutcome} (whose reads go through |
| 17 |
* {@see ABJ_404_Solution_ScheduledEventInspector}), because WordPress reports |
| 18 |
* several already-satisfied outcomes as failures and believing them mails the |
| 19 |
* plugin author an ERROR about work that was already done. |
| 20 |
*/ |
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class ABJ_404_Solution_CronScheduler { |
| 22 |
|
| 23 |
const HOOK_CLEANUP = 'abj404_cleanupCronAction'; |
| 24 |
const HOOK_GSC_FETCH = 'abj404_gsc_fetch_cron'; |
| 25 |
const HOOK_GSC_BACKGROUND_REFRESH = 'abj404_gsc_background_refresh'; |
| 26 |
const HOOK_UPDATE_PERMALINK_CACHE = 'abj404_updatePermalinkCacheAction'; |
| 27 |
const HOOK_UPDATE_LOGS_HITS_TABLE = 'abj404_updateLogsHitsTableAction'; |
| 28 |
const HOOK_SEND_DIGEST = 'abj404_send_digest'; |
| 29 |
const HOOK_REBUILD_NGRAM_CACHE = 'abj404_rebuild_ngram_cache_hook'; |
| 30 |
const HOOK_LOGSV2_CANONICAL_BACKFILL = 'abj404_logsv2_canonical_backfill'; |
| 31 |
const HOOK_REDIRECTS_DENORM_BACKFILL = 'abj404_redirects_denorm_backfill'; |
| 32 |
const HOOK_REDIRECTS_SORT_KEY_BACKFILL = 'abj404_redirects_sort_key_backfill'; |
| 33 |
const HOOK_SEND_QUEUED_REPORT = 'abj404_send_queued_report'; |
| 34 |
const HOOK_REFRESH_STATUS_COUNTS = 'abj404_refresh_status_counts'; |
| 35 |
const HOOK_REPAIR_COLLATIONS = 'abj404_repair_collations'; |
| 36 |
const HOOK_NETWORK_ACTIVATION = 'abj404_network_activation_hook'; |
| 37 |
const HOOK_NETWORK_ACTIVATION_BACKGROUND = 'abj404_network_activation_background'; |
| 38 |
const HOOK_NETWORK_UPGRADE_BACKGROUND = 'abj404_network_upgrade_background'; |
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const HOOK_DUPLICATE_LEGACY = 'abj404_duplicateCronAction'; |
| 40 |
const HOOK_REMOVE_DUPLICATES_LEGACY = 'removeDuplicatesCron'; |
| 41 |
const HOOK_DELETE_OLD_REDIRECTS_LEGACY = 'deleteOldRedirectsCron'; |
| 42 |
// The staged view_done rebuild cron was removed in the denorm chain, but |
| 43 |
// sites upgrading from a build that scheduled it may still carry the event; |
| 44 |
// deactivation must defensively clear it (matches deleteBlogData + Uninstaller). |
| 45 |
const HOOK_REBUILD_VIEW_DONE_LEGACY = 'abj404_rebuildViewDone'; |
| 46 |
|
| 47 |
/** @var callable(string,array<string,mixed>,callable):mixed|null */ |
| 48 |
private static $statusCountOperationTracer = null; |
| 49 |
|
| 50 |
/** @var ABJ_404_Solution_Clock */ |
| 51 |
private $clock; |
| 52 |
|
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/** @var ABJ_404_Solution_CronWriteOutcome Decides what a refused write meant, and reports it. */ |
| 54 |
private $outcome; |
| 55 |
|
| 56 |
/** @var ABJ_404_Solution_ScheduledEventInspector Read side of the cron store. */ |
| 57 |
private $inspector; |
| 58 |
|
| 59 |
/** |
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* @param ABJ_404_Solution_Clock $clock |
| 61 |
* @param ABJ_404_Solution_Logging|null $logger |
| 62 |
* @param ABJ_404_Solution_ScheduledEventInspector|null $inspector Defaults to a plain one; it owns no state. |
| 63 |
*/ |
| 64 |
public function __construct( |
| 65 |
ABJ_404_Solution_Clock $clock, |
| 66 |
$logger = null, |
| 67 |
?ABJ_404_Solution_ScheduledEventInspector $inspector = null |
| 68 |
) { |
| 69 |
$this->clock = $clock; |
| 70 |
$this->inspector = $inspector !== null ? $inspector : new ABJ_404_Solution_ScheduledEventInspector(); |
| 71 |
$this->outcome = new ABJ_404_Solution_CronWriteOutcome($logger, $this->inspector); |
| 72 |
} |
| 73 |
|
| 74 |
/** @param callable(string,array<string,mixed>,callable):mixed|null $tracer */ |
| 75 |
public static function setStatusCountOperationTracer($tracer): void { |
| 76 |
self::$statusCountOperationTracer = $tracer; |
| 77 |
} |
| 78 |
|
| 79 |
/** @return int */ |
| 80 |
public function now(): int { |
| 81 |
return $this->clock->now(); |
| 82 |
} |
| 83 |
|
| 84 |
/** @return string */ |
| 85 |
public function lastFailureDetail(): string { |
| 86 |
return $this->outcome->lastFailureDetail(); |
| 87 |
} |
| 88 |
|
| 89 |
/** |
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* @param string $hook |
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* @param array<int, mixed> $args |
| 92 |
* @return int|false |
| 93 |
*/ |
| 94 |
public function nextScheduled(string $hook, array $args = array()) { |
| 95 |
return self::traceStatusCountOperation( |
| 96 |
$hook, |
| 97 |
'next_scheduled_check', |
| 98 |
function () use ($hook, $args) { |
| 99 |
if (!function_exists('wp_next_scheduled')) { |
| 100 |
return false; |
| 101 |
} |
| 102 |
return empty($args) |
| 103 |
? wp_next_scheduled($hook) |
| 104 |
: wp_next_scheduled($hook, $this->listArgs($args)); |
| 105 |
} |
| 106 |
); |
| 107 |
} |
| 108 |
|
| 109 |
/** |
| 110 |
* Whether anything at all is queued for a hook, whatever arguments it |
| 111 |
* carries. |
| 112 |
* |
| 113 |
* The question {@see nextScheduled()} cannot answer: WordPress identifies |
| 114 |
* an event by hook AND arguments, so a no-args probe is blind to every |
| 115 |
* chain that carries a cursor or a counter in its args. Callers that arm a |
| 116 |
* self-rescheduling chain ask this first, so they recognize their own |
| 117 |
* in-flight link instead of queueing a second one beside it. |
| 118 |
* |
| 119 |
* @param string $hook |
| 120 |
* @return bool |
| 121 |
*/ |
| 122 |
public function hasAnyScheduledEvent(string $hook): bool { |
| 123 |
return $this->inspector->anyEventIsStored($hook); |
| 124 |
} |
| 125 |
|
| 126 |
/** Make the next cron-store observation read durable cross-request state. */ |
| 127 |
public function refreshStoredEventReads(): void { |
| 128 |
$this->inspector->refreshCronStoreReads(); |
| 129 |
} |
| 130 |
|
| 131 |
/** |
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* @param string $hook |
| 133 |
* @param array<int, mixed> $args |
| 134 |
* @return bool |
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*/ |
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public function scheduleSingleIfMissing(string $hook, int $delaySeconds = 0, array $args = array()): bool { |
| 137 |
if ($this->nextScheduled($hook, $args) !== false) { |
| 138 |
return true; |
| 139 |
} |
| 140 |
return $this->scheduleSingle($hook, $delaySeconds, $args); |
| 141 |
} |
| 142 |
|
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/** |
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* @param string $hook |
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* @param array<int, mixed> $args |
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* @return bool |
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*/ |
| 148 |
public function scheduleSingle(string $hook, int $delaySeconds = 0, array $args = array()): bool { |
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return $this->scheduleSingleAt($hook, $this->timestampAfter($delaySeconds), $args); |
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} |
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|
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/** |
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* @param string $hook |
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* @param array<int, mixed> $args |
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* @return bool |
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*/ |
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public function scheduleSingleAt(string $hook, int $timestamp, array $args = array()): bool { |
| 158 |
if (!function_exists('wp_schedule_single_event')) { |
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$this->outcome->reportScheduleFailure(array( |
| 160 |
'type' => 'single', |
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'hook' => $hook, |
| 162 |
'recurrence' => null, |
| 163 |
'timestamp' => $timestamp, |
| 164 |
'args' => $args, |
| 165 |
'errorCode' => 'cron_primitive_unavailable', |
| 166 |
'detail' => 'wp_schedule_single_event unavailable', |
| 167 |
'now' => $this->clock->now(), |
| 168 |
)); |
| 169 |
return false; |
| 170 |
} |
| 171 |
$scheduled = self::traceStatusCountOperation( |
| 172 |
$hook, |
| 173 |
'scheduling_write', |
| 174 |
fn() => wp_schedule_single_event( |
| 175 |
$timestamp, |
| 176 |
$hook, |
| 177 |
$this->listArgs($args), |
| 178 |
true |
| 179 |
) |
| 180 |
); |
| 181 |
if ($this->outcome->reportsFailure($scheduled)) { |
| 182 |
return $this->outcome->resolveSingleWrite(array( |
| 183 |
'writeResult' => $scheduled, |
| 184 |
'hook' => $hook, |
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'args' => $args, |
| 186 |
'timestamp' => $timestamp, |
| 187 |
'now' => $this->clock->now(), |
| 188 |
)); |
| 189 |
} |
| 190 |
return true; |
| 191 |
} |
| 192 |
|
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/** |
| 194 |
* @template T |
| 195 |
* @param callable():T $work |
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* @return T |
| 197 |
*/ |
| 198 |
private static function traceStatusCountOperation( |
| 199 |
string $hook, |
| 200 |
string $operation, |
| 201 |
callable $work |
| 202 |
) { |
| 203 |
if ($hook !== self::HOOK_REFRESH_STATUS_COUNTS |
| 204 |
|| self::$statusCountOperationTracer === null) { |
| 205 |
return $work(); |
| 206 |
} |
| 207 |
return (self::$statusCountOperationTracer)( |
| 208 |
$operation, |
| 209 |
array('family' => 'status_refresh_cron'), |
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$work |
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); |
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} |
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|
| 214 |
/** |
| 215 |
* @param string $hook |
| 216 |
* @param string $recurrence |
| 217 |
* @param array<int, mixed> $args |
| 218 |
* @return bool |
| 219 |
*/ |
| 220 |
public function scheduleRecurringIfMissing(string $hook, string $recurrence, int $delaySeconds = 0, array $args = array()): bool { |
| 221 |
if ($this->nextScheduled($hook, $args) !== false) { |
| 222 |
return true; |
| 223 |
} |
| 224 |
return $this->scheduleRecurringAt(array( |
| 225 |
'hook' => $hook, |
| 226 |
'recurrence' => $recurrence, |
| 227 |
'timestamp' => $this->timestampAfter($delaySeconds), |
| 228 |
'args' => $args, |
| 229 |
)); |
| 230 |
} |
| 231 |
|
| 232 |
/** |
| 233 |
* Removes one identified occurrence without affecting sibling events. |
| 234 |
* |
| 235 |
* @param array{timestamp: int, hook: string, args: array<int, mixed>, expectedNextTimestamp: int} $request |
| 236 |
* expectedNextTimestamp is what nextScheduled() must report afterwards on |
| 237 |
* WordPress builds whose unschedule primitive returns no status of its own. |
| 238 |
*/ |
| 239 |
public function unscheduleAt(array $request): bool { |
| 240 |
$timestamp = $request['timestamp']; |
| 241 |
$hook = $request['hook']; |
| 242 |
$args = $request['args']; |
| 243 |
$expectedNextTimestamp = $request['expectedNextTimestamp']; |
| 244 |
if (!function_exists('wp_unschedule_event')) { |
| 245 |
$this->outcome->reportUnavailablePrimitive(array( |
| 246 |
'verb' => 'unschedule', |
| 247 |
'hook' => $hook, |
| 248 |
'primitive' => 'wp_unschedule_event', |
| 249 |
)); |
| 250 |
return false; |
| 251 |
} |
| 252 |
$result = empty($args) |
| 253 |
? wp_unschedule_event($timestamp, $hook, array(), true) |
| 254 |
: wp_unschedule_event($timestamp, $hook, $this->listArgs($args), true); |
| 255 |
if ($this->outcome->reportsFailure($result)) { |
| 256 |
return $this->outcome->resolveRemoval(array( |
| 257 |
'writeResult' => $result, |
| 258 |
'hook' => $hook, |
| 259 |
'args' => $args, |
| 260 |
'timestamp' => $timestamp, |
| 261 |
)); |
| 262 |
} |
| 263 |
if ($result === null && $this->nextScheduled($hook, $args) !== $expectedNextTimestamp) { |
| 264 |
return $this->outcome->reportRemovalNotVerified($hook, $timestamp); |
| 265 |
} |
| 266 |
return true; |
| 267 |
} |
| 268 |
|
| 269 |
/** |
| 270 |
* @return bool |
| 271 |
*/ |
| 272 |
public function scheduleDailyInWindowIfMissing(string $hook, int $startHour, int $endHour): bool { |
| 273 |
$startHour = max(0, min(23, $startHour)); |
| 274 |
$endHour = max(0, min(23, $endHour)); |
| 275 |
if ($endHour < $startHour) { |
| 276 |
$endHour = $startHour; |
| 277 |
} |
| 278 |
$hourRange = max(1, $endHour - $startHour + 1); |
| 279 |
$hour = $startHour + (random_int(0, 23) % $hourRange); |
| 280 |
$timeForEvent = sprintf( |
| 281 |
'%02d:%02d:%02d', |
| 282 |
$hour, |
| 283 |
random_int(10, 59), |
| 284 |
random_int(10, 59) |
| 285 |
); |
| 286 |
// The requested [$startHour, $endHour] window is a WP-site-local |
| 287 |
// off-peak window (e.g. "0-5am, when this site has the least |
| 288 |
// traffic"). wp_schedule_event() below compares the resulting |
| 289 |
// timestamp against WP-Cron's true-UTC clock, so the wall-clock |
| 290 |
// hour must be anchored to the site's configured timezone |
| 291 |
// (SiteTimezone) rather than PHP's implicit default timezone -- |
| 292 |
// otherwise the "local off-peak" window silently lands at the |
| 293 |
// wrong local hour whenever the two timezones differ (e.g. a |
| 294 |
// managed host running PHP in UTC for a site configured to |
| 295 |
// America/Los_Angeles). |
| 296 |
try { |
| 297 |
$timestamp = (new DateTimeImmutable('today ' . $timeForEvent, ABJ_404_Solution_SiteTimezone::resolve()))->getTimestamp(); |
| 298 |
} catch (Exception $e) { |
| 299 |
$this->outcome->reportScheduleFailure(array( |
| 300 |
'type' => 'recurring', |
| 301 |
'hook' => $hook, |
| 302 |
'recurrence' => 'daily', |
| 303 |
'timestamp' => 0, |
| 304 |
'args' => array(), |
| 305 |
'errorCode' => 'schedule_timestamp_calculation_failed', |
| 306 |
'detail' => 'failed to calculate daily schedule timestamp: ' . $e->getMessage(), |
| 307 |
'now' => $this->clock->now(), |
| 308 |
)); |
| 309 |
return false; |
| 310 |
} |
| 311 |
if ($this->nextScheduled($hook) !== false) { |
| 312 |
return true; |
| 313 |
} |
| 314 |
return $this->scheduleRecurringAt(array( |
| 315 |
'hook' => $hook, |
| 316 |
'recurrence' => 'daily', |
| 317 |
'timestamp' => $timestamp, |
| 318 |
'args' => array(), |
| 319 |
)); |
| 320 |
} |
| 321 |
|
| 322 |
/** |
| 323 |
* @param array<int, mixed> $args |
| 324 |
* @return void |
| 325 |
*/ |
| 326 |
public function clearHook(string $hook, array $args = array()): void { |
| 327 |
if (!function_exists('wp_clear_scheduled_hook')) { |
| 328 |
$this->outcome->reportUnavailablePrimitive(array( |
| 329 |
'verb' => 'clear', |
| 330 |
'hook' => $hook, |
| 331 |
'primitive' => 'wp_clear_scheduled_hook', |
| 332 |
)); |
| 333 |
return; |
| 334 |
} |
| 335 |
empty($args) ? wp_clear_scheduled_hook($hook) : wp_clear_scheduled_hook($hook, $this->listArgs($args)); |
| 336 |
} |
| 337 |
|
| 338 |
/** |
| 339 |
* @param array<int, mixed> $args |
| 340 |
* @return void |
| 341 |
*/ |
| 342 |
public function unscheduleAllOccurrences(string $hook, array $args = array()): void { |
| 343 |
if (!function_exists('wp_unschedule_event')) { |
| 344 |
$this->outcome->reportUnavailablePrimitive(array( |
| 345 |
'verb' => 'unschedule', |
| 346 |
'hook' => $hook, |
| 347 |
'primitive' => 'wp_unschedule_event', |
| 348 |
)); |
| 349 |
return; |
| 350 |
} |
| 351 |
$timestamp = $this->nextScheduled($hook, $args); |
| 352 |
while ($timestamp !== false) { |
| 353 |
$result = empty($args) |
| 354 |
? wp_unschedule_event($timestamp, $hook, array(), true) |
| 355 |
: wp_unschedule_event($timestamp, $hook, $this->listArgs($args), true); |
| 356 |
|
| 357 |
// A refused removal leaves the occurrence exactly where it was, so |
| 358 |
// the next read returns the same timestamp and asking again can |
| 359 |
// only produce the same refusal. wp_unschedule_event() refuses on a |
| 360 |
// failed cron-store write, and since WordPress 5.7 any plugin on |
| 361 |
// the `pre_unschedule_event` filter can short-circuit it without |
| 362 |
// removing anything. |
| 363 |
if ($this->outcome->reportsFailure($result)) { |
| 364 |
$this->outcome->resolveRemoval(array( |
| 365 |
'writeResult' => $result, |
| 366 |
'hook' => $hook, |
| 367 |
'args' => $args, |
| 368 |
'timestamp' => $timestamp, |
| 369 |
)); |
| 370 |
return; |
| 371 |
} |
| 372 |
|
| 373 |
$next = $this->nextScheduled($hook, $args); |
| 374 |
|
| 375 |
// Terminate on lack of progress rather than on the primitive's |
| 376 |
// answer alone. A short-circuiting filter can return a truthy value |
| 377 |
// while removing nothing, and builds before 5.7 report no status at |
| 378 |
// all, so "it said it worked" is not evidence the occurrence is |
| 379 |
// gone. Advancing is. |
| 380 |
if ($next === $timestamp) { |
| 381 |
$this->outcome->reportRemovalNotVerified($hook, $timestamp); |
| 382 |
return; |
| 383 |
} |
| 384 |
|
| 385 |
$timestamp = $next; |
| 386 |
} |
| 387 |
} |
| 388 |
|
| 389 |
/** |
| 390 |
* @param array<int, string>|null $hooks |
| 391 |
* @return void |
| 392 |
*/ |
| 393 |
public function clearRegisteredHooks(?array $hooks = null): void { |
| 394 |
foreach ($hooks ?? self::registeredHooks() as $hook) { |
| 395 |
$this->unscheduleAllOccurrences($hook); |
| 396 |
$this->unscheduleAllOccurrences($hook, array('')); |
| 397 |
$this->clearHook($hook); |
| 398 |
} |
| 399 |
} |
| 400 |
|
| 401 |
/** |
| 402 |
* @return array<int, string> |
| 403 |
*/ |
| 404 |
public static function registeredHooks(): array { |
| 405 |
return array( |
| 406 |
self::HOOK_CLEANUP, |
| 407 |
self::HOOK_GSC_FETCH, |
| 408 |
self::HOOK_GSC_BACKGROUND_REFRESH, |
| 409 |
self::HOOK_UPDATE_PERMALINK_CACHE, |
| 410 |
self::HOOK_UPDATE_LOGS_HITS_TABLE, |
| 411 |
self::HOOK_SEND_DIGEST, |
| 412 |
self::HOOK_REBUILD_NGRAM_CACHE, |
| 413 |
self::HOOK_LOGSV2_CANONICAL_BACKFILL, |
| 414 |
self::HOOK_REDIRECTS_DENORM_BACKFILL, |
| 415 |
self::HOOK_REDIRECTS_SORT_KEY_BACKFILL, |
| 416 |
self::HOOK_SEND_QUEUED_REPORT, |
| 417 |
self::HOOK_REFRESH_STATUS_COUNTS, |
| 418 |
self::HOOK_REPAIR_COLLATIONS, |
| 419 |
self::HOOK_NETWORK_ACTIVATION, |
| 420 |
self::HOOK_NETWORK_ACTIVATION_BACKGROUND, |
| 421 |
self::HOOK_NETWORK_UPGRADE_BACKGROUND, |
| 422 |
self::HOOK_DUPLICATE_LEGACY, |
| 423 |
self::HOOK_REMOVE_DUPLICATES_LEGACY, |
| 424 |
self::HOOK_DELETE_OLD_REDIRECTS_LEGACY, |
| 425 |
self::HOOK_REBUILD_VIEW_DONE_LEGACY, |
| 426 |
); |
| 427 |
} |
| 428 |
|
| 429 |
/** |
| 430 |
* @param array{hook: string, recurrence: string, timestamp: int, args?: array<int, mixed>} $request |
| 431 |
* @return bool |
| 432 |
*/ |
| 433 |
public function scheduleRecurringAt(array $request): bool { |
| 434 |
$hook = $request['hook']; |
| 435 |
$recurrence = $request['recurrence']; |
| 436 |
$timestamp = $request['timestamp']; |
| 437 |
$args = isset($request['args']) ? $request['args'] : array(); |
| 438 |
if (!function_exists('wp_schedule_event')) { |
| 439 |
$this->outcome->reportScheduleFailure(array( |
| 440 |
'type' => 'recurring', |
| 441 |
'hook' => $hook, |
| 442 |
'recurrence' => $recurrence, |
| 443 |
'timestamp' => $timestamp, |
| 444 |
'args' => $args, |
| 445 |
'errorCode' => 'cron_primitive_unavailable', |
| 446 |
'detail' => 'wp_schedule_event unavailable', |
| 447 |
'now' => $this->clock->now(), |
| 448 |
)); |
| 449 |
return false; |
| 450 |
} |
| 451 |
$scheduled = wp_schedule_event($timestamp, $recurrence, $hook, $this->listArgs($args), true); |
| 452 |
if ($this->outcome->reportsFailure($scheduled)) { |
| 453 |
return $this->outcome->resolveRecurringWrite(array( |
| 454 |
'writeResult' => $scheduled, |
| 455 |
'hook' => $hook, |
| 456 |
'recurrence' => $recurrence, |
| 457 |
'args' => $args, |
| 458 |
'timestamp' => $timestamp, |
| 459 |
'now' => $this->clock->now(), |
| 460 |
)); |
| 461 |
} |
| 462 |
return true; |
| 463 |
} |
| 464 |
|
| 465 |
/** |
| 466 |
* The wall-clock second a delay of $delaySeconds lands on, measured against |
| 467 |
* the same clock every write here uses. |
| 468 |
* |
| 469 |
* Public so a caller that has to SAY which timestamp it asked for can hold |
| 470 |
* the one value and hand it to both {@see scheduleSingleAt()} and its own |
| 471 |
* diagnostics, rather than re-deriving it. A diagnostic that recomputes the |
| 472 |
* request it is describing is free to describe a request nobody made, which |
| 473 |
* is how a stalled n-gram rebuild reported a schedule time ten seconds out |
| 474 |
* while the chain had actually backed off (production report 294). |
| 475 |
* |
| 476 |
* @param int $delaySeconds Negative delays are clamped to now. |
| 477 |
*/ |
| 478 |
public function timestampAfter(int $delaySeconds): int { |
| 479 |
return $this->clock->now() + max(0, $delaySeconds); |
| 480 |
} |
| 481 |
|
| 482 |
/** |
| 483 |
* @param array<int, mixed> $args |
| 484 |
* @return list<mixed> |
| 485 |
*/ |
| 486 |
private function listArgs(array $args): array { |
| 487 |
return array_values($args); |
| 488 |
} |
| 489 |
} |
| 490 |
|
